Test results

Overall score

Soft soap scum removal

Hard soap scum removal

Good points

But

How we test

Overall score

Soft soap scum removal - 80%

Hard soap scum removal - 20%

Soft soap scum
To simulate soft soap scum, we use a scum comprised of hard soaps, synthetic sebum (simulating bodily oils) and carbon black (to give the scum colour so its removal can be measured). The scum is baked on to white ceramic tiles at 80°C and is then scrubbed off with a mechanical scrubbing arm. To determine the scum-removal score, we measured the light reflected before and after scrubbing. We repeated each test three times and averaged the results.

Hard soap scum
To simulate hard soap scum, we used a combination of calcium stearate and carbon black. Calcium stearate is the most common hard soap scum and is formed due to the reaction between soap ingredients and calcium ions present in water. The scum is baked on to white ceramic tiles at 180°C and is then scrubbed off with a mechanical scrubbing arm. To determine the scum-removal score, we measured the light reflected before and after scrubbing. We repeated each test three times and averaged the results.

Key data

Product

Price guide

$6.49

Type

Foam

Pack size

390g

Sprays per bottle

na

Price per 100ml/g ($)

1.66

Member reviews

"Disappointed "

28 May 2016,
Maureen V.

Product use: 1 month or less

Pros:

????

Cons:

Used the whole can on one (2 year old) slightly soap scummed shower and saw no difference. I usually love Bam products but wouldn't buy this one again.